This is a very adaptable fish: able to be kept in unheated or heated aquaria, and in outdoor ponds. Can sometimes be aggressive towards tankmates such as fancy goldfish, but this varies with individual fish. The Paradise Fish has been popular as an aquarium fish since the 1860's, and a number of different aquarium varieties now exist. Males grow to about 7-8cm and the females remain slightly smaller. In nature, Paradise Fish are found from Korea, southwards to Vietnam.
Gouramis and Anabantids are attractive aquarium fish. Gouramis live for about four years but with proper care can live longer.
Gouramis are peaceful fish that do well in most community aquaria. They require a tank that is 40 litres or larger. They are usually found swimming on the middle to top regions of the aquarium. This is not surprising since the Gourami is a labyrinth fish. That is, Gouramis can breathe oxygen from the air through their Labyrinth (organ) (like the Betta) if necessary. It is important, therefore that the surface of the water be exposed to fresh air. This is usually accomplished by using a hood that allows air ventilation. If you are using good air pumps, this is not always needed, since the air pumps will refresh the air above the water.
The aquarium should be heavily planted and have at least part of the surface covered with floating plants. A darker substrate will help show-off the gourami's colors, and peat filtration is recommended. Gouramis should not be kept with large, aggressive fish, but are compatible with other small, peaceful fish as well as with fellow gouramis. Loud noises often scare them, so the tank should be in a quiet area. Regular water changes are a must.
Gouramis are tolerant of fairly high temperature. Temperatures of 29 ?C are easily tolerated.